CN107598156A - Compact diamond tool carcass powder - Google Patents
Compact diamond tool carcass powder Download PDFInfo
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- CN107598156A CN107598156A CN201710839556.3A CN201710839556A CN107598156A CN 107598156 A CN107598156 A CN 107598156A CN 201710839556 A CN201710839556 A CN 201710839556A CN 107598156 A CN107598156 A CN 107598156A
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Abstract
The present invention relates to a kind of compact diamond tool carcass powder, belong to the technical field of diamond tool.The present invention compact diamond tool carcass powder, it include 25~35wt% copper powder, 5~15wt% cobalt powders, 2~9wt% nickel, 2~8wt% glass putty, 0~2wt% titanium valve, 1~2wt% titanium easy decomposition of chemical compounds and 29~65wt% iron powder.The carcass powder of the present invention is strong to the hold of diamond, the diamond particles inlayed can keep higher height of protrusion, the phenomenon to come off will not also occur to early under conditions of high-speed cutting and drilling, disclosure satisfy that the requirement to the high-speed cuttings such as granite, marble and drilling.
Description
Technical field
The present invention relates to the technical field of diamond tool, it is more particularly related to a kind of diamond sintering work
Tool carcass powder.
Background technology
Compact diamond tool be using diamond as cutting material, by means of made of metal powder material have definite shape,
The instrument of performance and purposes, conventional compact diamond tool include saw blade, emery wheel, cut piece and roller etc..Building
In industry, compact diamond tool has been widely used for cutting for the stone materials such as marble, granite, concrete or construction material
Cut, finishing, grinding etc..Compact diamond tool at work (such as cutting or drilling) when influence factor it is a lot, work
The consumption wear process of tool is difficult with the naked eye directly to observe.In general, compact diamond tool operating efficiency and use are influenceed
The principal element in life-span has instrument in itself and target (hardness for referring mainly to rock).Substantial amounts of research shows：Diamond
Sintering instrument is cut or the major influence factors of drilling efficiency are the self-sharpening of diamond tool and the height of protrusion of diamond.Its
In, self-sharpening is the embodiment of the ability of diamond tool entirety continuous cutting, and diamond exposure is then individual particle diamond
The embodiment of detritus ability, both combinations are the performance indications of instrument cutting or drilling efficiency.The failure mode of diamond particles has
Three kinds wear, split broken and come off.Handle of the height of protrusion and failure mode of diamond with carcass material to diamond particles
The abrasion condition of holding force and carcass in itself is closely related.There is the main left and right of metal powder material used by compact diamond tool
Two：One is high-abrasive material is connected into grid frame holds diamond；The second is can be worn away with the abrasion of diamond,
Diamond is set normally to go out sword.Solder is in addition to certain hardness, toughness and wearability, if had to diamond certain
Wellability, will greatly improve diamond height of protrusion, so as to improve grinding performance.Generally use is pre- in the prior art
Alloy powder improves hold of the carcass to diamond particles, but under conditions of high-speed cutting or drilling, easily causes gold
Hard rock is polished or polished, or even the morning of occurrence of large-area takes off phenomenon, causes service life to reduce, in addition the price of prealloy powder
Also costly.
The content of the invention
In order to solve the above-mentioned problems in the prior art, it is an object of the invention to provide a kind of diamond sintering work
Tool carcass powder.
In order to realize foregoing invention purpose, present invention employs following technical scheme：
A kind of compact diamond tool carcass powder, it is characterised in that：The carcass powder includes 25~35wt%'s
Copper powder, 5~15wt% cobalt powders, 2~9wt% nickel, 2~8wt% glass putty, 0~2wt% titanium valve, 1~2wt% titanium
Easy decomposition of chemical compounds, and 29~65wt% iron powder.
Wherein, the rare earth powder in the carcass powder also containing 0.1~4.0wt%.
Wherein, the rare earth powder is selected from Ce powder, La powder or La-Ce mischmetal powder, preferably La-Ce mischmetals powder.
Wherein, the Si powder in the carcass powder also containing 0.1~1.8wt%, Al-Si powder or Si-Mg powder.
Wherein, the iron powder is ultra-fine reduced iron powder, the particle diameter d of the ultra-fine reduced iron powder90≤15μm。
Wherein, the easy decomposition of chemical compounds of the titanium is selected from titanium oxalate, lactic acid titanium, titanium acetylacetone, acetic acid titanium and bay
One or more in acid etc..
Compared with immediate prior art, compact diamond tool of the invention carcass powder has below beneficial to effect
Fruit：
The carcass powder of the present invention is strong to the hold of diamond, and the diamond particles inlayed can keep higher and go out sword
Highly, the phenomenon to come off will not also occur to early under conditions of high-speed cutting and drilling, disclosure satisfy that to granite, greatly
The high-speed cuttings such as reason stone or the requirement of drilling.
Embodiment
The compact diamond tool of the present invention is further elaborated with carcass powder below with reference to specific embodiment,
To make more complete and clear explanation to technical scheme.
The compact diamond tool carcass powder of the present invention, includes 25~35wt% copper powder, 5~15wt% cobalt powders, and 2
~9wt% nickel, 2~8wt% glass putty, 0~2wt% titanium valve, 1~2wt% titanium easy decomposition of chemical compounds, and 29~
65wt% iron powder.Further, the rare earth powder in the carcass powder also containing 0.1~4.0wt%, the rare earth powder are selected from
Ce powder, La powder or La-Ce mischmetal powder；A small amount of above-mentioned rare earth powder is added in carcass powder and advantageously reduces iron-based matrix
The fusing point and solid, liquid liquidus temperature of powder, and be capable of the effect of effectively deoxidation, desulfurization and denitrogenation, and can suppress oxygen,
The segregation of sulphur and nitrogen；And be advantageous to the crystal grain of the tyre body alloy of refinement sintering, improve sharpness and stability.The rare earth powder
Preferably La-Ce mischmetals powder, not only price is relatively low for mischmetal powder, and performance is more excellent.Further, the carcass powder
Si powder, Al-Si powder or Si-Mg powder in end also containing 0.1~1.8wt%.Si addition can form Fe2Si, FeSi with Fe
Advantageously reduce fusing point, and reinforced ferrite etc. compound, Si linear expansion coefficient approaches with diamond in addition, heating or
Bulk effect in cooling procedure is minimum.Cu-Al a variety of phase structures can be formed with Cu particularly with the addition of Al-Si powder, favorably
In formation dispersion-strengtherning structure, and improve hold of the carcass to diamond particles.The iron powder is ultra-fine reduced iron powder, described
The particle diameter d of ultra-fine reduced iron powder90≤ 15 μm, sintering temperature can be significantly reduced by adding ultra-fine reduced iron powder in the present invention, from
And the decline of diamond particles performance caused by high temperature sintering can be avoided.The easy decomposition of chemical compounds of the titanium be selected from titanium oxalate,
One or more in lactic acid titanium, titanium acetylacetone, acetic acid titanium and laurate etc..In the present invention, diamond segment uses
Metal powder material in be added with Ti and Ti labile compound, what on the one hand it was decomposed to form during hot pressed sintering
Gas is advantageous to the reduction (so that diamond segment goes out sword earlier) of carcass, and the carbon for the high activity being decomposed to form
And titanyl compound can further improve the hold of diamond particles and carcass, so as to ensure height of protrusion and
Prevent it is too early come off so that the present invention diamond segment can adapt to high-speed cutting (diamond saw blade) or high speed drill
Enter the requirement of (diamond bit).
Compact diamond tool can use hot pressed sintering work by claimed carcass powder and diamond particles
Skill is formed.Main technological parameter is as follows：Hot pressed sintering temperature is 760~850 DEG C, and pressure is 200~300kg/cm2, insulation
Time is 1~5 minute, and hot pressed sintering is carried out under protective atmosphere (such as reducing atmosphere).
For cutting or drilling for the stone material such as granite and marble, granularity can be used as 30/40 (425-
600 μm) and 40/50 (300-425 μm) diamond particles.Diamond concentration is 1.0~2.5 carats/cm3。
So that carcass powder of the present invention prepares diamond disc (255mm) as an example, its preparation section is as follows：
1st, circular saw blade substrate
According to drawing requirement, circular saw blade substrate is obtained using 65Mn steel steel plates as Raw material processing.
2nd, the hot pressed sintering of diamond segment
According to proportioning, choose comprising copper powder, cobalt powder, nickel powder, glass putty, titanium valve, the easy decomposition of chemical compounds of titanium, and iron powder etc.
Material powder uniformly obtains carcass powder using three-dimensional material mixer batch mixing, uses isostatic pressing strength as 40kg, granularity 30/40,40/
The diamond particles of 50 (respectively accounting for 50%), by carcass powder, (diamond particles are according to 1.8 carats/cm with diamond particles mixing3
Concentration design addition), be then pressed into type, hot pressed sintering, grinder buffing prepares diamond segment.The temperature of hot pressed sintering is
760~850 DEG C, pressure is 200~300kg/cm2, soaking time 1~5 minute.
3rd, high-frequency welding
The circular saw blade substrate processed is fixed on the fixture of high-frequency welder, is placed on after silver soldering piece is stained with into silver soldering agent
On diamond segment solder side, then circular saw blade substrate and diamond segment are fixed together, starts high-frequency induction heating and sets
It can be cooled down for silver soldering piece fusing be heated to.
4th, polish, paint, examine
Put the first edge on a knife or a pair of scissors after welding with emery wheel and polishing is carried out to diamond segment diamond is fully exposed, then carry out surface lacquer,
Drying, finally with 600N/mm2Strength criterion carries out bending resistance detection, qualified rear printing packaging storage to each diamond segment.
In following embodiment and comparative example exemplified by preparing specification as 255mm diamond disc, the copper of use
Powder, cobalt powder, nickel powder, glass putty, rare earth powder, silica flour, high silicon silicon aluminium alloy powder (silicone content 72wt%), titanium valve and titanium compound
Powder has been purchased from levigation end new material Co., Ltd, particle diameter d90About 45~50 μm；The iron powder used is ultra-fine reduced iron powder (section
Big Boulder), the particle diameter d of the ultra-fine reduced iron powder90About 15 μm.
Embodiment 1
1) dispensing：25wt% copper powder, 10wt% cobalt powders, 6wt% nickel, 3wt% glass putty, 1.5wt% titanium valve,
2wt% titanium acetylacetone, 1.0wt% La-Ce mixed powders, the iron powder composition of 0.5wt% Si powder and surplus.Addition
Diamond concentration is 1.8ct/cm3, diamond grit 3/40 accounts for 50%, 40/50 and accounts for 50%, molding mass is blended into, using three-dimensional
Batch mixer, mixing time obtain carcass powder in 120 minutes.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Embodiment 2
1) dispensing：32wt% copper powder, 8wt% cobalt powders, 5wt% nickel, 5wt% glass putty, 1.2wt% titanium valve,
2wt% lactic acid titanium, 1.0wt% La-Ce mixed powders, the iron powder composition of 0.5wt% high silicon silicon aluminium alloy powder and surplus.
The diamond concentration of addition is 1.8ct/cm3, diamond grit 3/40 accounts for 50%, 40/50 and accounts for 50%, be blended into molding mass, adopt
With three-dimensional material mixer, mixing time obtains carcass powder in 120 minutes.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Embodiment 3
1) dispensing：25wt% copper powder, 10wt% cobalt powders, 6wt% nickel, 3wt% glass putty, 1.5wt% titanium valve,
The iron powder composition of 2wt% titanium acetylacetone, 1.0wt% La-Ce mixed powders and surplus.The diamond concentration of addition is
1.8ct/cm3, diamond grit 3/40 accounts for 50%, 40/50 and accounts for 50%, is blended into molding mass, using three-dimensional material mixer, during batch mixing
Between obtain carcass powder within 120 minutes.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Embodiment 4
1) dispensing：32wt% copper powder, 8wt% cobalt powders, 5wt% nickel, 5wt% glass putty, 1.2wt% titanium valve,
2wt% lactic acid titanium and the iron powder composition of surplus.The diamond concentration of addition is 1.8ct/cm3, diamond grit 3/40 accounts for
50%th, 40,/50 50% is accounted for, is blended into molding mass, using three-dimensional material mixer, mixing time obtains carcass powder in 120 minutes.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Comparative example 1
1) dispensing：25wt% copper powder, 10wt% cobalt powders, 6wt% nickel, 3wt% glass putty, 1.0wt% La-Ce is mixed
Close the iron powder composition of powder, 0.5wt% Si powder and surplus.The diamond concentration of addition is 1.8ct/cm3, diamond grit 3/
40, which account for 50%, 40/50, accounts for 50%, is blended into molding mass, and using three-dimensional material mixer, mixing time obtains carcass powder in 120 minutes.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Comparative example 2
1) dispensing：32wt% copper powder, 8wt% cobalt powders, 5wt% nickel, 5wt% glass putty, 1.0wt% La-Ce is mixed
Close the iron powder composition of powder, 0.5wt% high silicon silicon aluminium alloy powder and surplus.The diamond concentration of addition is 1.8ct/cm3, gold
Hard rock granularity 3/40 accounts for 50%, 40/50 and accounts for 50%, is blended into molding mass, and using three-dimensional material mixer, mixing time obtains for 120 minutes
To carcass powder.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Comparative example 3
1) dispensing：25wt% copper powder, 10wt% cobalt powders, 6wt% nickel, 3wt% glass putty, 1.5wt% titanium valve,
1.0wt% La-Ce mixed powders and the iron powder composition of surplus.The diamond concentration of addition is 1.8ct/cm3, diamond grit
3/40, which accounts for 50%, 40/50, accounts for 50%, is blended into molding mass, and using three-dimensional material mixer, mixing time obtains carcass powder in 120 minutes
End.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
Comparative example 4
1) dispensing：32wt% copper powder, 8wt% cobalt powders, 5wt% nickel, 5wt% glass putty, 1.2wt% titanium valve and
The iron powder composition of surplus.The diamond concentration of addition is 1.8ct/cm3, diamond grit 3/40 accounts for 50%, 40/50 and accounts for 50%,
Molding mass is blended into, using three-dimensional material mixer, mixing time obtains carcass powder in 120 minutes.
2) letter is made：Granulating agent is added in carcass powder and carries out batch mixing, it is simple to be granulated.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the carcass powder for putting 65Mn steel matrix-launch again granulation is assembled into cold moudling
It is press-formed in punching block, briquetting pressure 20MPa, obtains blank.
4) hot pressed sintering：The blank for being cold-pressed formation is assembled in Graphite pad, burnt in the environment of protective gas
Knot, the temperature of hot pressed sintering is 820 DEG C, pressure 220kg/cm2, soaking time 5 minutes.
5) pad punching, put the first edge on a knife or a pair of scissors, paint：By the instrument pad descale after pressureless sintering, punching, entered using blade grinding machine
Row puts the first edge on a knife or a pair of scissors, and is painted.
The diamond disc of embodiment and comparative example is used to cut marble with 12cm/min cutting condition
Experiment is cut, to measure cutting index Z (the amount cm for the stone material that the wear extent of unit instrument is cut in the unit interval3/ gmin),
And sword height (μm) is averaged out using micro- sem observation, as a result as shown in table 1.
Table 1
| Cut index Z (cm3/g·min) | Average height of protrusion (μm) | |
| Embodiment 1 | 42.5 | 78 |
| Embodiment 2 | 46.3 | 73 |
| Embodiment 3 | 41.7 | 72 |
| Embodiment 4 | 42.2 | 70 |
| Comparative example 1 | 32.7 | 65 |
| Comparative example 2 | 35.1 | 62 |
| Comparative example 3 | 32.2 | 63 |
| Comparative example 4 | 30.9 | 60 |
For the ordinary skill in the art, simply the present invention is exemplarily described for specific embodiment,
Obviously present invention specific implementation is not subject to the restrictions described above, and is entered as long as employing the inventive concept and technical scheme of the present invention
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (10)
- A kind of 1. compact diamond tool carcass powder, it is characterised in that：The carcass powder includes 25~35wt% copper Powder, 5~15wt% cobalt powders, 2~9wt% nickel, 2~8wt% glass putty, 0~2wt% titanium valve, 1~2wt% titanium it is easy The iron powder of decomposition of chemical compounds and 29~65wt%.
- 2. compact diamond tool carcass powder according to claim 1, it is characterised in that in the carcass powder also Rare earth powder containing 0.1~4.0wt%.
- 3. compact diamond tool carcass powder according to claim 1, it is characterised in that in the carcass powder also Si powder, Al-Si powder or Si-Mg powder containing 0.1~1.8wt%.
- 4. compact diamond tool carcass powder according to claim 1, it is characterised in that the carcass powder includes 25~35wt% copper powder, 5~15wt% cobalt powders, 2~9wt% nickel, 2~8wt% glass putty, 1~2wt% titanium valve, 1~ The easy decomposition of chemical compounds of 2wt% titanium, 0.1~4.0wt% rare earth powder, 0.1~1.8wt% Si or Si alloyed powders and 29 ~63wt% iron powder.
- 5. compact diamond tool carcass powder according to claim 1, it is characterised in that the carcass powder is by 25 ~35wt% copper powder, 5~15wt% cobalt powders, 2~9wt% nickel, 2~8wt% glass putty, 1~2wt% titanium valve, 1~ The easy decomposition of chemical compounds of 2wt% titanium, 0.1~4.0wt% rare earth powder, 0.1~1.8wt% Si or Si alloyed powders and remaining The iron powder composition of amount.
- 6. the compact diamond tool carcass powder according to any one of Claims 1 to 5, it is characterised in that the titanium Easy one or more of the decomposition of chemical compounds in titanium oxalate, lactic acid titanium, titanium acetylacetone, acetic acid titanium and laurate etc..
- 7. compact diamond tool carcass powder according to claim 6, it is characterised in that the rare earth powder is selected from Ce Powder, La powder or La-Ce mischmetal powder.
- 8. compact diamond tool carcass powder according to claim 7, it is characterised in that the rare earth powder is La-Ce Mischmetal powder.
- 9. compact diamond tool carcass powder according to claim 6, it is characterised in that the iron powder is gone back to be ultra-fine Former iron powder, and the particle diameter d of the ultra-fine reduced iron powder90≤15μm。
- 10. compact diamond tool carcass powder according to claim 3, it is characterised in that in the carcass powder also Al-Si powder containing 0.1~1.8wt%.
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| CN112223129A (en) * | 2020-09-11 | 2021-01-15 | 泉州众志金刚石工具有限公司 | Metal-based terrace grinding block material for concrete grinding |
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| CN108582503B (en) * | 2018-05-07 | 2020-10-09 | 江苏锋泰工具有限公司 | Diamond cutting tool bit and manufacturing method thereof |
| CN108941535A (en) * | 2018-08-02 | 2018-12-07 | 泉州众志金刚石工具有限公司 | The application and alternative of organic acid nickel substitution nano nickel in diamond matrix |
| CN112223129A (en) * | 2020-09-11 | 2021-01-15 | 泉州众志金刚石工具有限公司 | Metal-based terrace grinding block material for concrete grinding |
| CN112676562A (en) * | 2020-12-17 | 2021-04-20 | 安徽奥微新材料有限公司 | Preparation method of high-performance metal prefabricated powder added with rare earth |
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